- Only one set of the '[' and ']' selection designators can be given for each match.

- String mode, Single character mode and Character code mode can't be used
together. Any given match must use only one of those modes at a time.

- Patterns and the '[', ']' and '|' indicators are only valid for string mode. They have no effect in single character mode or character code mode.

Limitations in Renumbering:

- Numbers in filenames from 0 to 999999999 can be handled.

- No wildcards can be used and when a destination path is supplied no
clash checking takes place (it is assumed that the destination directory
contains no filenames that can clash with the filenames that will be
moved there).

- No filenames that contain wildcard characters can be used, because
pattern matching is used to collect the filenames of the sequence.

- Any numbers that have a different format to that of the first number
scanned will not be renumbered: if the first number is 001 and 02,03
follow, these will not be renumbered because SRename will expect to find
002 and 003.

- A filename clash can not be resolved if the clashing filename is
outside the range of filenames to be renumbered ("New number
already exists" error).